21204304

素因数分解:

$2^4\times {\mathrm{11}}^1\times {\mathrm{17}}^1\times {\mathrm{19}}^1\times {\mathrm{373}}^1$

素因数の和:428

約数の個数: 80

約数和(自身を含む): 50086080

約数和(自身を除く): 28881776

約数列:

[1, 2, 4, 8, 11, 16, 17, 19, 22, 34, 38, 44, 68, 76, 88, 136, 152, 176, 187, 209, 272, 304, 323, 373, 374, 418, 646, 746, 748, 836, 1292, 1492, 1496, 1672, 2584, 2984, 2992, 3344, 3553, 4103, 5168, 5968, 6341, 7087, 7106, 8206, 12682, 14174, 14212, 16412, 25364, 28348, 28424, 32824, 50728, 56696, 56848, 65648, 69751, 77957, 101456, 113392, 120479, 139502, 155914, 240958, 279004, 311828, 481916, 558008, 623656, 963832, 1116016, 1247312, 1325269, 1927664, 2650538, 5301076, 10602152, 21204304]

約数ペア:

[(1, 21204304), (2, 10602152), (4, 5301076), (8, 2650538), (11, 1927664), (16, 1325269), (17, 1247312), (19, 1116016), (22, 963832), (34, 623656), (38, 558008), (44, 481916), (68, 311828), (76, 279004), (88, 240958), (136, 155914), (152, 139502), (176, 120479), (187, 113392), (209, 101456), (272, 77957), (304, 69751), (323, 65648), (373, 56848), (374, 56696), (418, 50728), (646, 32824), (746, 28424), (748, 28348), (836, 25364), (1292, 16412), (1492, 14212), (1496, 14174), (1672, 12682), (2584, 8206), (2984, 7106), (2992, 7087), (3344, 6341), (3553, 5968), (4103, 5168)]